Figure 4 Dimensions
Table 6
Dimensions
Type
Variable dimensions
A B C D
mm inch mm inch mm inch mm inch
nXR30/40i
478 18.82 443 17.44 103 4.06 339 13.34
nXR60/90/120i 494 19.45 461 18.15 107 4.21 370 14.56
3.2 Performance
Table 7
Performance data
Parameter Units
nXR30i nXR40i nXR60i nXR90i nXR120i
Maximum pumping speed *
m
3
/hr
30 40 60 90 120
Ulmate pr
essure mbar 0.03
Maximum connuous inlet pressure mbar 1013 20
Maximum connuous exhaust pressure mbar(g) 200
Suck-back protecon Exhaust valve design
Maximum pressure rise when stopped,
no inlet ow or gas ballast ow
mbar 100
Maximum permied gas ballast inlet
pressure (with gas ballast adaptor ed)
bar(g) 0.5
Gas ballast ow l/min 25
Maximum water vapor pumping rate
(with gas ballast applied)
kg/hr 0.3
Typical ulmate pressure with gas ballast mbar < 0.1
Leak gh
tness (stac) mbar l/s
< 1x10
-6
* Values for maximum pumping speed are obtained with the inlet strainer. The pumping
speed is measured at s
tandard ambient temperature and pressure. At higher
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A90301880_C - Technical data